DOI | 10.5194/acp-23-2061-2023
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| Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry |
| Zhong, Shujun; Chen, Shuang; Deng, Junjun; Fan, Yanbing; Zhang, Qiang; Xie, Qiaorong; Qi, Yulin; Hu, Wei; Wu, Libin; Li, Xiaodong; Pavuluri, Chandra Mouli; Zhu, Jialei; Wang, Xin; Liu, Di; Pan, Xiaole; Sun, Yele; Wang, Zifa; Xu, Yisheng; Tong, Haijie; Su, Hang; Cheng, Yafang; Kawamura, Kimitaka; Fu, Pingqing
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发表日期 | 2023
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ISSN | 1680-7316
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EISSN | 1680-7324
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起始页码 | 2061
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结束页码 | 2077
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卷号 | 23期号:3页码:17 |
英文摘要 | Biomass burning is one of the key sources of urban aerosols in the North China Plain, especially during winter, when the impact of secondary organic aerosols (SOAs) formed from biogenic volatile organic compounds (BVOCs) is generally considered to be minor. However, little is known about the influence of biogenic SOA loading on the molecular composition of wintertime organic aerosols. Here, we investigated the water-soluble organic compounds in fine particulate matter (PM2.5) from urban Tianjin by ultrahigh-resolution Fourier transform ion cyclotron resonanc mass spectrometry (FT-ICR MS). Our results show that most of the CHO and CHON compounds are derived from biomass burning which are poor in oxygen and contain aromatic rings that probably contribute to light-absorbing brown carbon (BrC) chromophores. Under moderate to high SOA-loading conditions, the nocturnal chemistry is more efficient than photooxidation to generate secondary CHO and CHON compounds with high oxygen content. Under low SOA loading, secondary CHO and CHON compounds with low oxygen content are mainly formed by photochemistry. Secondary CHO compounds are mainly derived from oxidation of monoterpenes. However, nocturnal chemistry may be more productive to sesquiterpene-derived CHON compounds. In contrast, the number- and intensity-weight of S-containing groups (CHOS and CHONS) increased significantly with the increase of biogenic SOA loading, which agrees with the fact that a majority of the S-containing groups are identified as organosulfates (OSs) and nitrooxy-organosulfates (nitrooxy-OSs) that are derived from the oxidation of BVOCs. Terpenes may be potential major contributors to organosulfates and nitrooxy-organosulfates. While the nocturnal chemistry is more beneficial to the formation of organosulfates and nitrooxy-organosulfates under low SOA loading. The SOA loading is an important factor that is associated with the oxidation degree, nitrate group content and chemodiversity of nitrooxy-organosulfates. Furthermore, our study suggests that the hydrolysis of nitrooxy-organosulfates is a possible pathway for the formation of organosulfates. |
学科领域 | Environmental Sciences; Meteorology & Atmospheric Sciences
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语种 | 英语
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WOS研究方向 | Environmental Sciences & Ecology
; Meteorology & Atmospheric Sciences
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WOS记录号 | WOS:000934954600001
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来源期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
(IF:5.668[JCR-2018],6.201[5-Year]) |
文献类型 | 期刊论文
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条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/273215
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作者单位 | Tianjin University; Chinese Academy of Sciences; Institute of Atmospheric Physics, CAS; Chinese Research Academy of Environmental Sciences; Max Planck Society; Chubu University
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推荐引用方式 GB/T 7714 |
Zhong, Shujun,Chen, Shuang,Deng, Junjun,et al. Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry[J],2023,23(3):17.
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APA |
Zhong, Shujun.,Chen, Shuang.,Deng, Junjun.,Fan, Yanbing.,Zhang, Qiang.,...&Fu, Pingqing.(2023).Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(3),17.
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MLA |
Zhong, Shujun,et al."Impact of biogenic secondary organic aerosol (SOA) loading on the molecular composition of wintertime PM2.5 in urban Tianjin: an insight from Fourier transform ion cyclotron resonance mass spectrometry".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.3(2023):17.
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